Metric Clips | McMaster-Carr

Often used with small engines, heavy equipment, and power transmission, these external retaining rings have speared ends to help you install and remove them.

Internal Retaining Rings

Squeeze these rings to place them in the groove inside a bore or housing.

Heavy-Duty Internal Retaining Rings

Thicker and stronger than standard internal retaining rings, these withstand greater thrust loads.

Internal Teeth Retaining Rings

With teeth along the inside, these retaining rings hold chamfered shafts inside the housing of your equipment.

Single-Turn Spiral Internal Retaining Rings

Slide these rings into place by hand with a single twist for applications with high thrust loads.

Heavy Duty Spiral Internal Retaining Rings

Thicker than standard spiral rings, these rings withstand greater forces.

Spiral Internal Retaining Rings

These coiled rings can be wound into place inside a bore or housing without tools.

Push-On Internal Retaining Rings

No groove required—these rings have teeth that firmly grip the bore.

Cotter Pins

Hairpin Cotter Pins

Also known as hitch pin clips and R-clips, these pins are easy to install and remove.

Strong-Hold Hairpin Cotter Pins

A coil makes a stronger grip than standard hairpin cotter pins to prevent accidental release.

Cotter Pins

Also known as split pins, these have one prong slightly longer than the other so they’re easy to open. Bend prongs outward to secure.

Nuts

Metric No-Slip Clip-On Barrel Nuts

These metric nuts have a barrel with multiple threads for secure thread engagement. Also known as U-style clip-on nuts.

Metric Clip-On Nuts for Flanged Edges

Slide these nuts on the edge of a panel and position them by hand. Also known as G-style clip-on nuts.

Metric Round Push Nuts

These metric push nuts can be used as a standalone for light-duty applications or as a jam nut.

Steel Snap-In Nuts

Snap these nuts into square holes in thin materials.

Stainless Steel Snap-In Nuts

Stainless steel snap-in nuts have excellent corrosion resistance in most environments.

Metric Steel Slip-On Twist-Close Nuts

Attach these metric slip-on nuts at any point on a threaded rod for quick installation.

Fastener Assortments

Side-Mount External Retaining Ring Assortments

Also known as E-Style and C-style rings, slide these into the groove from the side of the shaft. They provide a wider shoulder than other external retaining rings for a larger retaining surface.

External Retaining Ring Assortments

Pull these rings open with retaining ring pliers, pass over the end of a shaft, and release to spring into a groove.

External, Internal, and Side-Mount
Retaining Ring Assortments

These assortments include pliers to install external and internal rings.

Internal Retaining Ring Assortments

Pull ring ends together with retaining ring pliers and place into the bore of a shaft or housing.

Cotter Pin Assortments

Also known as split pins, these have one prong slightly longer than the other so they’re easy to open.

Captive Panel Screws

Snap-In Captive Panel Screws

Snap these screws into panels up to 0.125" thick—no tools are required for installation.

Socket Head Captive Panel Screws

Install these socket head screws through a hole and thread on a retainer to keep secure—no special tools are required.

Routing Clamps

For use with a single line, these clamps brace pipe, tubing, and conduit directly against the mounting surface.

Two-Line Routing Clamps

Mount parallel lines of pipe, tubing, or conduit directly against the mounting surface.

Strut-Mount Metal Routing Clamps

Route pipe, tubing, and conduit across strut channel.

Low-Profile Strut-Mount Metal Routing Clamps

For areas with low clearance, these clamps have the mounting fastener to the side of the material, rather than on top.

Narrow-Space Strut-Mount Metal Routing Clamps

Even when these clamps are installed side by side, the clamping screws remain accessible. Use them to route pipe, tubing, and conduit across strut channel.

Standoff Strut-Mount Metal Routing Clamps

Hold pipe, tubing, and conduit away from strut channel.

Strut-Mount Metal Routing Clamps for Insulated Pipe

Secure insulated pipe to strut channel without pinching the insulation or exposing the pipe. These clamps are sized for use with insulated pipe and have a plastic insert that creates a seal around the insulation to prevent the pipe from sweating, which can cause mold and corrosion.

Plastic Routing Clamps

For use with a single line, these plastic clamps reduce wear on softer materials, such as tubing and cable, and prevent corrosion caused by metal-to-metal contact.

Multiline Plastic Routing Clamps

Organize multiple lines of pipe, tubing, or hose with a single clamp. They are polyethylene for good chemical and UV resistance.

Chemical-Resistant Plastic Routing Clamps

For use on a single line, these polypropylene clamps withstand moisture and most chemicals. They're commonly used to route tubing in compressed air systems. A folding arm closes to secure material.

Two-Line Chemical-Resistant Plastic Routing Clamps

Route two lines of tubing with a single clamp. Commonly used in compressed air systems, these polypropylene clamps withstand moisture and most chemicals. They have a folding arm that closes to secure material.

Connectable Plastic Routing Clamps

Join these clamps together to line up multiple pipes, cables, or tubes side-by-side, even when they are different sizes.

Adhesive-Back Plastic Routing Clamps

Backed with foam adhesive tape, these clamps mount to any smooth surface—no fasteners required. They are noncorrosive, nonconductive nylon.

Plastic Expansion Routing Clamps

Flexible grooves inside these polypropylene clamps allow material to expand and contract. Clamps are moisture and chemical resistant.

Lock-Close Strut-Mount Plastic Routing Clamps

Slide these clamps into strut channel and snap closed for quick installation with no tools required. They are noncorrosive, nonconductive nylon.

Vibration-Damping Routing Clamps

A rubber cushion reduces vibration and wear from clamp edges. The cushion also protects lines of pipe, tubing, and conduit from corrosion caused by metal-to-metal contact.

Strut-Mount Vibration-Damping Routing Clamps

Slide multiple clamps into existing strut channel to organize lines of pipe, tubing, and conduit without the need for drilling, welding, or using adhesive. Clamps have a plastic or rubber cushion or body to reduce vibration.

Weld-Mount Vibration-Damping Routing Clamps

For a more secure connection than rail- and adhesive-mount clamps, weld the bottom plate of these clamps onto your rails. They fit tightly around pressurized lines in hydraulic systems to lessen vibration.

Two-Line Weld-Mount
Vibration-Damping Routing Clamps

Secure two pressurized hydraulic lines with a single clamp to lessen vibration in hydraulic systems. Weld the bottom plate onto the mounting surface for a more secure connection than rail- and adhesive-mount clamps.

Adhesive-Mount Vibration-Damping Routing Clamps

Avoid the hassle of welding with these adhesive-mount clamps—they use a high-strength adhesive to form a permanent bond with the mounting surface—no additional tools required. Once assembled, the clamps fit tightly around pressurized lines in hydraulic systems to lessen vibration.

Rail-Mount Vibration-Damping Routing Clamps

For use with a single line, these clamps mount directly onto rails, no adhesive or welding required. They fit tightly around pressurized lines in hydraulic systems to lessen vibration.

Two-Line Rail-Mount
Vibration-Damping Routing Clamps

Secure two pressurized hydraulic lines with a single clamp. Mount these clamps directly onto rails, no adhesive or welding required. They fit tightly around the lines to reduce vibration.

Loop Clamps

Vibration-Damping Loop Clamps

A cushion covering the clamp reduces vibration and wear from clamp edges. Clamps surround lines of pipe, tubing, and conduit completely while holding them close to the mounting surface.

Multiline Vibration-Damping Loop Clamps

Organize multiple lines of pipe, tubing, and conduit with one clamp. Wider than standard loop clamps, multiline loop clamps surround two lines of material to create a secure grip while holding the lines close to the mounting surface. A cushion covering the clamp reduces vibration and wear from clamp edges.

Snug-Fit Vibration-Damping Loop Clamps

A molded cushion reduces vibration and wear from clamp edges, plus it provides a tighter fit around material than standard vibration-damping loop clamps.

Plastic Loop Clamps

Compared to metal loop clamps, plastic loop clamps reduce wear on soft materials, such as tubing and cable. Clamps are nonconductive and noncorrosive.

Loop Clamps

These clamps completely surround single lines of pipe, tubing, and conduit while holding them close to the mounting surface.

Multiline Loop Clamps

Standoff Clamps

Keep material from coming in contact with the mounting surface without the need for a spacer.

Riser Clamps

Support vertical pipes passing through floors.

U-Bolts

Mount these general purpose U-bolts into an existing bracket, or combine with a mounting plate for a secure hold at the mounting surface.

U-Bolts with Mounting Plates

A mounting plate provides a more secure hold at the mounting surface.

Rubber-Cushioned U-Bolts

A durable rubber cushion and mounting plate prevent corrosion and wear caused by metal-to-metal contact. The mounting plate is removable, so the U-bolts can be installed onto an existing line without needing to dissemble it.

Clamping U-Bolts

Also known as muffler clamps, these U-bolts have a rounded mounting plate that fully surrounds pipe, conduit, and tubing for a secure fit.

Vibration-Damping U-Bolts

Reduce vibration and noise in your lines—a plastic cushion tightly grips pipe, tubing, and conduit to prevent movement. Nylon-insert locknuts grip the thread to resist loosening.

Nonconductive U-Bolts

These fiberglass-reinforced polyurethane U-bolts have no metal parts, so they won't conduct electricity or cause metal-to-metal corrosion.

Beam Clamps

Beam Clamps for Threaded Rod

Attach these clamps to the flange of an beam, then hang a threaded rod from the threaded hole.

Parallel Beam-to-Beam Clamps

Join two beams in a straight line.

Threaded-Rod-Mount Hangers

Plastic Clamping Hangers

These plastic hangers prevent corrosion caused by metal-to-metal contact. Push them closed for a more secure hold on material than loop hangers.

Quick-Install Plastic Clamping Hangers

Clip these hangers onto the side of threaded rod. Unlike other threaded-rod-mount hangers, you can use more than one hanger on the same rod to organize multiple lines of pipe, tubing, and conduit.

Threaded-Rod-Mount Clamping Hangers

Also known as conduit hangers, these hangers load from the bottom so you can add or remove material without removing the mounted hanger.

Stackable Threaded-Rod-Mount Clamping Hangers

Mount these hangers on top of one another to organize multiple lines of pipe, tubing, and conduit at any angle.

Snug-Hold Threaded-Rod-Mount Clamping Hangers

Load material between the two halves of the ring and adjust the side bolts for a tighter fit than standard threaded-rod-mount clamping hangers.

Vibration-Damping
Threaded-Rod-Mount Clamping Hangers

Rubber cushions fit material tightly to reduce vibration and provide a more secure hold than loop hangers. The cushions also protect material from sharp edges and prevent corrosion caused by metal-to-metal contact.

Stackable Vibration-Damping
Threaded-Rod-Mount Clamping Hangers

Connect these hangers to organize multiple lines of pipe, tubing, and conduit. The tight-fitting, santoprene body reduces vibration and prevents corrosion caused by metal-to-metal contact.

Washdown Vibration-Damping
Threaded-Rod-Mount Clamping Hangers

These hangers provide maximum corrosion resistance in wet environments and stand up to frequent washdowns with harsh cleaners and sanitizers. Rounded edges, polished surfaces, and acorn or hex nuts that conceal threads reduce the number of places for bacteria to grow and make them easier to clean.

Pivoting Threaded-Rod-Mount Loop Hangers

Also known as clevis hangers, these have a pivoting loop that adjusts for line movement and vibration. Combine with a threaded rod or other fastener to hang from the ceiling.

Swivel Threaded-Rod-Mount Loop Hangers

These hangers have a swivel nut for adjusting direction after mounting. They're also known as teardrop hangers. Combine with a threaded rod or other fastener to hang from the ceiling.

Stainless Steel Threaded-Rod-Mount Loop Hangers

Use these hangers in corrosive environments and where chemicals are present. They're also known as teardrop hangers. Combine with a threaded rod or other fastener to hang from the ceiling.

Pipe Cradles for Loop Hangers

Also known as pipe shields, these cradles provide additional support and prevent insulation from tearing when routing insulated pipe through loop hangers.

Side-Load Threaded-Rod-Mount Loop Hangers

Access material quickly without uninstalling the mounted hanger. These hangers have a removable bolt for loading pipe, tube, and conduit from the side. Combine them with a threaded rod or other fastener to hang from the ceiling.

Threaded-Rod-Mount Roller Loop Hangers

A roller on the bottom of these hangers compensates for movement due to expansion and contraction, such as in hydraulic applications. Combine with a threaded rod or other fastener to hang from the ceiling.

Threaded-Rod-Mount Multiline Hangers

Route multiple lines of pipe, tubing, and conduit with a single hanger. A wide opening and locking tab allow access for installation, adjustment, and removal.

Strap-Mount Clamping Hangers

Use these close-fitting hangers for a more rigid hold around material than when using straps alone.

Weld-Mount Clamping Hangers

For a strong, secure connection, mount these hangers by welding them to a rod.

Strut-Mount Routing Saddles for Insulated Pipe

Clip these saddles around the outside of strut channel for a quick way to route insulated tubing and pipe. Lips on either end of the saddle protect insulation from abrasion if the pipe should move.

Stud-Mount Routing Supports

Attach these supports onto metal stud knockouts to route cable, conduit, and tubing through metal studs.

Stud-Mount Routing Brackets

Mount these brackets between two studs to support copper tubing for sink faucets and other water supply fixtures.

Parallel Handscrew Clamps

The matching jaws are ground flat for a firm grip and even pressure when clamping smooth surfaces.

Socket Organizers

Foam Socket Organizers

The slots in these low-profile organizers are a different color than the base so it's clear when tools are missing from your bench top or drawer.

Easy-ID Socket Organizers

Store sockets on posts marked with the size.

DIN Rails

Mounting Adapters for DIN Rails

Mount items not designed for DIN rail by attaching them to these adapters.

Stops and Spacers for DIN Rails

Position terminal blocks, relays, and other components mounted to DIN rails with these stops and spacers.

DIN Rails

Mount terminal blocks, power supplies, relays, and other control and distribution devices on walls and other flat surfaces and in enclosures.

Magnetic-Back DIN Rails

Mount and reposition components without drilling leaky holes in your steel enclosure—a strong magnet holds these DIN rails in place.

Adhesive-Back DIN Rails

Stick this DIN rail in any enclosure to mount components without making screw holes that might leak.

Cable Clips for DIN Rails

Slide these clips on DIN rails—often used in equipment cabinet racks—to route and organize cables. Since these clips don’t require adhesive or screws, you can move them anywhere along the rail.

Mounting Brackets for DIN Rails

Use these brackets for extra mounting space behind DIN rail to accommodate wiring and bulky items.

Metric High-Capacity Leveling Mount Inserts for Tubular Legs

Metric High-Capacity Leveling
Mount Inserts for Tubular Legs

Rated for high load capacity, use these metric inserts to connect threaded leveling mounts to heavy equipment.

External Retaining Rings

Side-Mount External Retaining Rings

Low-Clearance Side-Mount External Retaining Rings

Heavy Duty Side-Mount External Retaining Rings

External Retaining Rings

Heavy Duty External Retaining Rings

Inverted External Retaining Rings

Push-On External Retaining Rings

Clip-On External Retaining Rings

Heavy Duty Spiral External Retaining Rings

Single-Turn Spiral External Retaining Rings

Spiral External Retaining Rings

Speared Ends External Retaining Rings

Internal Retaining Rings

Internal Retaining Rings

Heavy-Duty Internal Retaining Rings

Internal Teeth Retaining Rings

Single-Turn Spiral Internal Retaining Rings

Heavy Duty Spiral Internal Retaining Rings

Spiral Internal Retaining Rings

Push-On Internal Retaining Rings

Cotter Pins

Hairpin Cotter Pins

Strong-Hold Hairpin Cotter Pins

Cotter Pins

Nuts

Metric No-Slip Clip-On Barrel Nuts

Metric Clip-On Nuts for Flanged Edges

Metric Round Push Nuts

Steel Snap-In Nuts

Stainless Steel Snap-In Nuts

Metric Steel Slip-On Twist-Close Nuts

Fastener Assortments

Side-Mount External Retaining Ring Assortments

External Retaining Ring Assortments

External, Internal, and Side-MountRetaining Ring Assortments

Internal Retaining Ring Assortments

Cotter Pin Assortments

Captive Panel Screws

Snap-In Captive Panel Screws

Socket Head Captive Panel Screws

Routing Clamps

Routing Clamps

Two-Line Routing Clamps

Strut-Mount Metal Routing Clamps

Low-Profile Strut-Mount Metal Routing Clamps

Narrow-Space Strut-Mount Metal Routing Clamps

Standoff Strut-Mount Metal Routing Clamps

Strut-Mount Metal Routing Clamps for Insulated Pipe

Plastic Routing Clamps

Plastic Routing Clamps

Multiline Plastic Routing Clamps

Chemical-Resistant Plastic Routing Clamps

Two-Line Chemical-Resistant Plastic Routing Clamps

Connectable Plastic Routing Clamps

Adhesive-Back Plastic Routing Clamps

Plastic Expansion Routing Clamps

Lock-Close Strut-Mount Plastic Routing Clamps

Vibration-Damping Routing Clamps

Vibration-Damping Routing Clamps

Strut-Mount Vibration-Damping Routing Clamps

Weld-Mount Vibration-Damping Routing Clamps

Two-Line Weld-MountVibration-Damping Routing Clamps

Adhesive-Mount Vibration-Damping Routing Clamps

Rail-Mount Vibration-Damping Routing Clamps

Two-Line Rail-MountVibration-Damping Routing Clamps

Loop Clamps

Vibration-Damping Loop Clamps

Multiline Vibration-Damping Loop Clamps

Snug-Fit Vibration-Damping Loop Clamps

Plastic Loop Clamps

Loop Clamps

Multiline Loop Clamps

Standoff Clamps

Standoff Clamps

Riser Clamps

Riser Clamps

U-Bolts

U-Bolts

U-Bolts with Mounting Plates

External, Internal, and Side-Mount
Retaining Ring Assortments

Two-Line Weld-Mount
Vibration-Damping Routing Clamps

Two-Line Rail-Mount
Vibration-Damping Routing Clamps

Vibration-Damping
Threaded-Rod-Mount Clamping Hangers

Stackable Vibration-Damping
Threaded-Rod-Mount Clamping Hangers

Washdown Vibration-Damping
Threaded-Rod-Mount Clamping Hangers

Metric High-Capacity Leveling
Mount Inserts for Tubular Legs